I wasn’t sure which energy gel to purchase, as there were a ton on the market. After some research I went with e-gel because it didn’t have caffeine and it was the best bang for my buck. Man was I thrilled to have it with me on Tough Mudder! We took one every hour or so on our adventure and I didn’t once feel fatigued. I can definitely attribute my success on Tough Mudder Tri-State 2011 to the use of e-gel. We killed it and none of my 7 person team were exhausted thanks to the electrolytes and sodium in e-gel.